Inquiry-based science is the thing right now, especially for the schools/states in the process of adopting the Next Generation Science Standards. My class is in the middle of a unit on inventions, inventors and simple machines. We're reading "Toys: Amazing Stories Behind Some Great Inventions" by Don Wulffson.
We're studying different inventions so the students can create their own. We're focusing on the purpose of inventions and how simple machines work. Here's a peak at some of our recent experiments and activities: